S
M
T
W
T
F
S
26
85°
71°
27
90°
71°
28
91°
72°
29
91°
72°
30
90°
71°
31
90°
71°
1
89°
70°
2
89°
71°
3
90°
71°
4
91°
72°
5
91°
71°
6
92°
72°
7
86°
64°
8
91°
66°
9
89°
64°
10
85°
63°
11
84°
62°
12
85°
64°
13
88°
67°
14
89°
69°
15
89°
68°
16
85°
68°
17
84°
65°
18
87°
67°
19
87°
67°
20
83°
68°
21
84°
66°
22
83°
62°
23
86°
62°
24
88°
64°
25
89°
66°
26
90°
67°
27
90°
65°
28
89°
65°
29
87°
64°
30
84°
66°
31
84°
62°
1
81°
60°
2
81°
59°
3
80°
58°
4
80°
57°
5
81°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mount Washington
Mount Washington's August 2026 forecast shows daily high temperatures ranging from 80° to 92°, with overnight lows between 57° and 72°. The average high for August is 87° with an average low of 66°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Mount Washington. See also: September | October | November.
